Combined-stoker and grate.



H" F. MOORE.

COMBINED STOKER AND GRATE.

APPLICATION FILED FEB. 1.1913. RENEWED APR. I8. 1917.

Patented Nov. 13, 1917.

s SHEETS-SHEET 1 H. F. MDOREf COMBINED STOKER AND GRATE. APPLICATION FILED FEB. 1,4913. RENEWED APR. 18. I911- Patented Nov. 13, 1917.

' 6 SHEETS-SHEET 2-.

Patented Nov. 13, 1917.

6 sum Patented Nov. 13, 19172 e SHEETS-SHEET 4.

Mizwaxam H. F. MOORE. COMBINED STOKER AND GRATE. APPLICATION FILED fE iB. I, ma. RENEWED APR. 12. m1.

1 ,246,639 Patented .Nov. 13, 1917.

6 SHEER-sugar 5,

H. F. MOORE.

COMBINED STOKER AND GRATE. v APPLICATION FILED FEB. b1913- RENEWED APR. 18, I917.

1,246,639. PatentedNov. 13, 1917.

6 SHEETS-SHEET 6.

.I 1 i i n E is an elevation of a portion of the end of said movable cleaner,ron an enlargedscale- Fig. 30 is an elevation of the hollow plate which is illustrated in Figs. 23 and 24:, with an additional one of said hollow plates indicated by broken lines, and an elevation of a movablevcleaner in a retracted position relative to said hollow plate, with said cleaner indicated by broken lines in an ad vanced position. Fig. 31 is a front elevation of one end of the several parts which are illustrated in Fig.30.

A reference character applied to desig nate a given part indicates said part throughout the several figures of the drawing whereverfsaid character appears.

X is the front wall of a boiler, and X the doors tosaid front wall. Y, (Fig. l) are the water tubes and Y a head in communi j cationwith-said tubes. Z is the bridge wall of the fire box of said boiler. A" '(Figs. 15 and 16,) are supporting members of the device, which. supporting grate of the device. 7), I), represent partitions in plates B and'are arranged to obtain passage ways I), (see Figs. 1 and 23) 1) represents the inlet to passage way 6, and b the outlet. C represents short pipes or tubes' which are attached to inlets b" to discharge into said passageways 1). Pipe or tube C vvhich'discharges into the inlet 6 and passage way I) of the lower one of the plates'B, (Fig. l), is attached to the dis- 7 charge end of supply pipeC, while the re maining ones of said pipes or tubes are attached to the upper side of the several plates B so as to be in communication with the outlets b""'ofthe next lower plates and the inlets b" of. the next higher plates. T he tube or pipe C from the highest plate B discharges into the chamber Cf, which chamber is provided with the outlet C A continuous water way is thus provided for the flowof water from supply pipe- C through pipesC, and passage waysb' 1n the several plates B to the chamber C",

fromrwhich said water is discharged by. outlet C": to .any desired place and-burn ing of'said'plates B'by the burning fuel thereon is prevented; V

D D, represent movable members of the device, and D a-"rocking shaft- Members D are mounted on supports A. Shaft D isiin.

journal bearings A. *A" are the vertical rigidly attached to shaft D.

edges of supports A, and 1 term them risers. (:5 represents a link which is pivotally attached at one end thereof to movable mem ber D and at the other end to one of the arms of bell crank cl. Bell crank d is Movable member D: is provided with slots 6', and D are bolts which extend through the slots d and into ape'rturesa" insu'pports A. It is by means of these bolts in said slots that I members Dare mounted on supports A, as hereinb'e'fore stated, and the movement of said members Dis permitted by said slots. E, E, represent'a'dditional members of the grate of the device. Members E rest movably onthe ribs a of supporting members retracted position in which they are shown A. Said'members E are movable from the i in Figs. ,1, 4 and so by r1111 lines, to the ad vanced position thereof which is indicated "by broken lines in said figures, and said movement isobtained by connecting'linksto said movable members and to mem bers'D.

It willbe'noted that by rocking-the shaft movedfrom the retracted "position thereof. which is shown by full lines 'in'Figs. 1 and 'D, the bell crank d and members D, are i 4-, into the advanced position which is in- I dicated by broken lines in saidfigures and thereby said members E are forced forward betweensaid risers-A, and by said'forward movement the members E'are moved on to'the upper surface of members B and partially over the same; and by said for-' ward movement of the members E someof the fuelwhich is being consumed on said plates- Bis pushed off therefrom and on to the next lower plates. And further, the ashes' and clinkers, if any, which are obtained from the combustion on the grate are on to plate F, (see Fig.1).

Members E are provided E, through which air to support combustion flows when said members are moving forward and back on t'othe platesBand beultimately pushed from the lowest plate B i x with apertures v 7 tween the risersA as hereinbefore described. v p

1 When said members E are in the retracted position which is 1llustrated in Fig. 1, in

full lines, the water cooled members B are interposed between-them and the burning.;

fuel, a nd air to support combustion of-said 1'- fuel flows in front of said members (through the space between said water. cooled members) and said airrtends to prea vent over-heating of-said members;

Movable ure F is mounted on the was ironsf, f; .fAngleirons fare rigidly secured which the device is installed. F

I in place'inthe ash pit-of the boiler under:

areihan die bars which are attached to said .plateF 1 and bymeanszof which' said plate is retracts ed from the position in which it is shown in Fig.1: afi when so;raractea h 7 yieldmgly h ld by"saidjsprmg'l Said ash piti' thereonflis discharged therefrominto a said G arev pivotally mounted .;m'embers" which prevent the movable'members E from carry ing fuel back therewith, wliiletsaid members are being retracted frOmtheir extremeforward position, and I therefore termthese members cleaners or scrapers. g are the bearings'inwhic'h 'members G are pivoted and, are secured to the underside of stationary and when it is so turned the movement of members I), see Fig. 30. i I

H is a fuel supply trough." When fuel such as coal which has been properly broken up, (and exceedingly fine coal'may be used with this device for fuel), is stored in are about to be described.

trough H the forward movement of the upper one of the members E, as above described, will force some of the fuel from said trough into the fire box andon to the upper one of the plates B.

The mechanism which is particularlyillus trated in F igs..3 and 4:, and detailed in Figs; 5 to 14, inclusive, is provided to automatically obtain at regular, but not too frequent intervals, a rocking of shaft D. Brieflystated. this mechanism consists of the reciprocating head I, having hook I rigidly attached thereto, rotating crank I shaft J, connection K extending from the crank j on shaft J to head I, link L, hook L pivotally. mounted on link L, lever M,

. cam N on shaft n, and ratchet wheel N. also on said shaft 91, dog or pawl O,bell crank P, and the connections to said partswhich The head I moves, when operated, in guide 2', and said guide issecured to the front of. the boiler. Shaft J is mounted in bearings J, and is actuated to continuously rotate by driving shaft J, which is provided with a gear wheel 3'" intermeshing with gear wheel 7" on said shaft J. The connection K moves up and down, (at the lower end thereof), once to each revolution of crank shaft J, and moves head I therewith. The cam wheel N is rigidly securedon shaft 'n, or at least to rotate therewith, and said shaft is moved with a step-by step movement, by dog or pawl O, which engages with the ratchet teeth of wheel. Said dog or pawl O ispivotallymounted on bell crank P, and said bell crank is actuated by pin ;0 on wheel 7'". In the construction illustrated the dog 0 gives one impulse to wheel N, shaft 12 and wheel cam N, on each revolu- Additional impulses eachrevolution of wheel j byputting addi-,

tional pins insa'id wheel, The connection link L is moved upward with the head I when the hook L thereon is forced into position to engage with the hookI, against the resilience of spring L, and said link is notjmoved by said head when-hook L is in theretracted*position in-whiclr-itwisg if hook If is-forc'ed into'positio'n'yto engage withhoklby thelower-end of lever-M i 7 when said leveris moved :by cam N, pro-- vided saidrlower end, (lettered mf), is=in an-- operative-positiom End m s prvotally attachedtothe body partoflever 'MT-bypivot I m, and said-bodypart is pivotally; mounte ed on divot m. End mcan be turned on itspivot so as not to engage with the hook L,

i are actuated thereby, and but one driving shaft J is required. Dumping plate F whenever desired.

Shaft D is manually operated between the times of the automatic operation thereof as hereinbefore. described, if necessary; and if a low fire is desired the automatic operation of said shaft is cut out by turning the end m as hereinbefore described, inwhich case the 7 manual operation of said shaft is wholly relied on for the operation thereof. It, Figs. 1, 21 and 22 is an angle iron which is attached at its ends (1', Fig. 1'), to the walls X, at the lower ends of supports A, (and in the ash pit). Thevertical member of angle iron R serves as a cleaner to the dumping. plate F, when said plate is re tracted, as hereinbefore described. This an? gle iron It also serves as a support to the lower ends of said supporting members A;

I claim; 1. Stationary grate members stepped to obtain air passage ways between them, re spectively, and meansto support said members, in combination with movable grate members which are normally in a retracted position and adapted to be moved on to said is manually operated stationary members on to the movable mem-- here which are moving on to the next lower stationary members, and to be returned to said normal position, and means to force said fuel from said movable members on to the stationary members thereunder during the return movement of said movable members, said means arranged to be not in contact with said movable memberswhen said movable membersare in said normal position.

2; Stationary grate members stepped to Obtain air. passageways between them, re-

position and adapted to be moved on to the spectiyely, and means to support said members, 1n combination w th movable grate members which are'normally in a retracted x r said stationary members of the grate to force scraping members retracted from said grate members, said'scraping members adapted to be turned 1nto operative posltion by said movable member as said movable member is 7 Copies of this patent may be obtained for being moved forward and to force fuel on said movable members on to said stationary 10 members as said movable members are being moved back to their normal position. HENRY F.-MOORE. In the presence (if-o CHARLES TURNER BROWN, D. D. SWELL,

five cents each, by addressing the Commissioner of Patents, Washington, D. C. V 

